Signal Characterizer Block; Execution; Figure 22: Signal Characterizer Block - Honeywell SLG 700 Option Manual

3.14 Signal Characterizer block

The Signal Characterizer block describes the input/output relationship for any type of function. The
block has two paths, each with an output that is a non-linear function of the corresponding input. The
non-linear function is configured based on a single look-up table with 21 arbitrary x-y pairs. To use the
block in a control or process signal path, the status of an input is provided to the corresponding output.
To use the backward control path, the block provides an option to swap the axes of the function.
The block calculates OUT_1 from IN_1 and OUT_2 from IN_2 using a curve given by the co-
ordinates:
[x1; y1], [x2; y2] ... [x21; y21]
Where,

x is the Input and

y is the Output.
The x-coordinates are given in engineering units of X_RANGE. The y-coordinates are given in
engineering units of Y_RANGE.

Execution

Figure 22 describes the components of the block. The output value is calculated by linear interpolation
between two points enclosing the input value. OUT_1 is associated to IN_1 and OUT_2 to IN_2 by
the same curve, but there is no association between IN_1 and IN_2 or between OUT_1 and OUT_2.
Rev.5

Figure 22: Signal Characterizer Block

FOUNDATION Fieldbus Option User's Manual Page 105